Lap timer watch



FIG. 1 is a top plan view of a lap timer watch showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a bottom plan view thereof.

The broken line strap ends are environmental only and form no part of the claimed design. 

The ornamental design for a lap timer watch, as shown and described. 